/* <!-- copyright */
/*
 * aria2 - The high speed download utility
 *
 * Copyright (C) 2012 Tatsuhiro Tsujikawa
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library under certain conditions as described in each
 * individual source file, and distribute linked combinations
 * including the two.
 * You must obey the GNU General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
 * do not wish to do so, delete this exception statement from your
 * version.  If you delete this exception statement from all source
 * files in the program, then also delete it here.
 */
/* copyright --> */
#ifndef D_NOTIFIER_H
#define D_NOTIFIER_H

#include "common.h"
#include "SharedHandle.h"

namespace aria2 {

class RequestGroup;
class Option;
struct Pref;

namespace rpc {

class WebSocketSessionMan;
class WebSocketSession;

} // namespace rpc

class Notifier {
public:
  // The string constants for download events.
  static const std::string ON_DOWNLOAD_START;
  static const std::string ON_DOWNLOAD_PAUSE;
  static const std::string ON_DOWNLOAD_STOP;
  static const std::string ON_DOWNLOAD_COMPLETE;
  static const std::string ON_DOWNLOAD_ERROR;
  static const std::string ON_BT_DOWNLOAD_COMPLETE;

  Notifier(const SharedHandle<rpc::WebSocketSessionMan>& wsSessionMan);
  ~Notifier();
  void addWebSocketSession(const SharedHandle<rpc::WebSocketSession>& wsSes);
  void removeWebSocketSession(const SharedHandle<rpc::WebSocketSession>& wsSes);
  // Notifies the download event to all listeners.
  void notifyDownloadEvent(const std::string& event, const RequestGroup* group);

  void notifyDownloadEvent(const std::string& event,
                           const SharedHandle<RequestGroup>& group)
  {
    notifyDownloadEvent(event, group.get());
  }
private:
  SharedHandle<rpc::WebSocketSessionMan> wsSessionMan_;
};

} // namespace aria2

#endif // D_NOTIFIER_H